Logic Gates

Question

If (A exnor B) = C, then (A exnor B exnor C) = ?

Answer 1

(A exnor B) = C .................[1]

(A exnor B exnor C) can be rewritten as

(C exnor C) ........................using [1]

for same values exnor returns true or logic 1

Hence answer is 1.

Answer 2

If (A exnor B) = C, then (A exnor B exnor C) =1